90400520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{322859}}^1$

素因数の和:322877

約数の個数: 32

約数和(自身を含む): 232459200

約数和(自身を除く): 142058680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 322859, 645718, 1291436, 1614295, 2260013, 2582872, 3228590, 4520026, 6457180, 9040052, 11300065, 12914360, 18080104, 22600130, 45200260, 90400520]

約数ペア:

[(1, 90400520), (2, 45200260), (4, 22600130), (5, 18080104), (7, 12914360), (8, 11300065), (10, 9040052), (14, 6457180), (20, 4520026), (28, 3228590), (35, 2582872), (40, 2260013), (56, 1614295), (70, 1291436), (140, 645718), (280, 322859)]